West Frisian tweintich

← Proto-Germanic *twaintigaz (inherited)

← Proto-Germanic *twai tigiwiz (mention)

← Old Frisian twentig (inherited)

→ English twenty (cognate)

→ German zwanzig (cognate)

→ West Frisian ienentweintich (compound)

→ Alemannic German zwänzg (cognate)

→ Alemannic German zwenzig (cognate)

→ Vilamovian cwencik (cognate)